Shaft coupling



Mar. 13, `1923.

W. PRELLWITZ. SHAFT couPLlN`G. FILED JUNE 13. |9422.

Patented Mar. i3, i923.

NETE@ SATES PATENT FFQE WILLIAM PRELLWITZ, OF EASTON, PENNSYLVANIA, ASSIGNOR TOvINGERSOLL-RAND COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SHAFT COUPLING.

Application filed June 13, 1922. Serial No. 567,896.

To all whom t may concern:

Be it known that I, WILLIAM PnELLwrrz, a citizen of the United States, and a resident of Easton, in the county of Northampton and State of Pennsylvania, have invented a certain Shaft Coupling, of which the following is a specification accompanied by drawings.

This invention relates to shaft couplings.

particularly suitable for directr driven man chilies such for instance as electrically driven compressors, pumps, and the like, although the coupling may beused for connecting` any` suitable driving and driven shafts.

The objects of the invention are to enable two shaft ends, as the ends of the driving shaft lof a motor and the crank shaft of a compressor or other machine, to be quickly and conveniently aligned, and coupled after one of the machines, usually the driven unit, has already been set on its foundations. By means of my coupling, the shafts may be quickly coupled, and then clamped together by suitable means such as a sleeve, or else a split pulley or a built up fly-wheel may be clamped over the coupling to hold the shafts together.

Further objects will hereinafter appear and to all of these ends the invention is shown in one of its preferred forms in the accompanying drawings, in which- Figure 1 is a side elevation partly in section of an installation to which the invention is to be applied,

Figure 2 is a detail view of the shaft ends partly broken away and partly in longitudinal section showing one step in adjusting the coupling,

Figure 8 is a view similar to Figure 2 showing another step in adjusting the coupling,

Figure 4 is a detail longitudinal sectional view partly broken away of the coupling showing a coupling sleeve for clamping the shaft ends together.

Figure 5 is a detail side elevation partly broken away of a portion of the installation showing a Hy-wheel for clamping the two ends of the shafts together.

Referring to the drawings, a power unit is shown for purposes of illustration comprising in this instance, a vertical compressor A mounted von the foundation B, and an `C, thus clamping the driving and driven electric motor C for driving the compressor, adapted to be mounted on the foundation D. The end of the armature shaft E of the m'o'- 55 tor, forming the driving shaft, is adapted to be connected to the end of the crank shaft F of the compressor, forming the driven shaft. My improved coupling permits such connection and adjustment of the shafts in alignment in a simple and efficient manner. As shown the meeting ends of the driving and driven shafts E and F are provided with reduced portions G and H respectively, preferably of different lengths, in this in# stance the reduced portion G being longer than the reduced portion H. A centering sleeve J is placed over the longer reduced shaft portion G and when the driving anddriven shafts are centered and in substantial alignment, as in Figures 2 and 3, the centering sleeve J is moved over the shorter reduced shaft portion H and a filler ring K, preferably in two parts, is inserted' in the space between the centering sleeve and the driving shaft E to lill said space. The centering sleeve is preferably shorter in length than the combined length of the reduced shaft portions G and H, and may be substantially equal in length to the longer of said reduced portions which in this instance is the portion C. By this means the. shafts may be centered and maintained in alignment and then clamped together.

In Figure `l. the compressor A has been.

mounted on its foundations B and the electric motor C is shown in process of being mounted on its foundations D. In Figure 5 the complete installation is shown set up onthe foundations, and in this instance, a built up or sectional fly-wheel L is adapted to be secured over the shaft ends E andF and keyed to the shafts, as by means of the keys shafts together.

In the modification sho-wn in Figure 4, a. two part coupling sleeve P is shown keyed to the shaft ends for clamping the shafts together, and it is to be understood that any suitable means may be provided for this purpose.

My shaft coupling is simple, readily adjusted, and permits the shafts of the driving and driven units to be yquickly assembled 1n said4vv` re'diioed portions of thev shafts, and` means for clainpino said shaft ends together.

2. A shaft coupling comprising driving and driven shafts havingirediiced, portions at their'ineeting ends, a centering sleeve 'and a filler yring ,over -said kreduced portions `of the'l shafts,y and nieans A'for clamping said shaftends together. Y Y

A shaft coiipling comprising driving anddriv'en shafts having reduced portions of different lengthsat their meeting ends,a

length of the' reduced' portions placed over saidfpor'tionspa filler ring; adjacent the c'en-' `tei'iin'g sleeve,

l y and ineans keyed to the shafts forl clamping said, shaft end sltoget'he'r.

i-.1 A shaft ycoupling ycomprising driving and" driven shafts; having reduced' portions ofdvf'erentflengths at their meeting ends, a

centering sleeve siibstantiallyeqiial in length to the longer of said reduced portions placed over said reduce the shafts,

l gether.

over said portions, an additional. filler ring over one of said portions, t-o theshafts for clampingsaidshaft ends together. i

5. A shaft coupling"comprising' driving and driven shafts having reducedy portions of different lengths att-heir meet-ing, ends,l a centering sleeve shorter than theycornloined lengths of the reduced portions placed over said portions, a two the'centering sleeve, and ineans keyed to the shafts for clamping said shaft ends together.

6. A rshaftveoupling comprising driving and driven shafts havi g reduced portions at, their ineetin 'i ends, La centeringsleeve v y dport'ions ofthe shafts, 'and q a huilt up fly-Wheelrkeyed tothe shafts for clamping said shaft ends together". centering;sleeveshorter than' thecombine'd y 7. A shaft couplingwcoinprising driving and driven shafts having 'reduced 'portions y at their meeting end`sa centering sleeve 'and a filler ring over said'v reducedk portions of v anda built up' fly-Wheel keyed to f the shafts for clamping said' shaft endsto In testimony Whereofflf havefsignedjthis specification. Y 4 WILLIAM PRELLWITZ.

and means keyed 1 part filler ring adj acent 

